Reversing-gearing



H. A. TUTTLE. REvERsrNG GEAmNG, APPLICATION FILED JUNE I8, |917;

`v1,392,982. I l Patented' Oct. v11, 1921.

MZW v -MIAQT/Icz H'. A.VTUTTLE.

REVERSING GEARING. APPLlcAlon'rxLEnluNEm.1911.

Patented Oct. 11, 1921.

2 SHEETSTSHEET 2.

UNITED STATES PATENT OFFICE.

HENRY A. TUTTLE, OF TAUNTON, MASSACHUSETTS.

REVERSIN G-GEARIN G.

Specification of Letters Patent.

Patented oet. 11, 1921.

Application led `.Tune 18, 1917. Serial No. 175,268.

To all whom t may concern.:

Be it known that I, HENRY A. TUTTLE, a citizen of the United States, Vresiding at Taunton, in the county of Bristol and State of Massachusetts, have'invented an Improvement in Reversing-Gearing, of which the following is a specification.

This invention relates to reversevearing of the type illustrated generally in 2Iletters Patent #1,1695 62 and #1,168,764, dated January 18, 1916, and 1,221,113, dated April 3, 1917, and is intended as an improvement on the same, as well as on other reverse-geari ing for which the improvements may be adapted.

Certain features of this invention arealso disclosed in my co-pending applications, Serial No. 176,673, tiled June l25, 1917; Serial No. 274,247, filed Jan. 31, 1919; Serial No. 339,108, filed Nov. 19, 1919; Serial No. 344,532, filed Dec. 13, 1919. i

The reversing-gearing of said patents, in its essential details with reference to the present invention, consistsl of a drivingshaft, a driven-shaft, gearing connecting said shafts including brakegmechanism to secure reverse drive, and a clutch-mechanism to secureJ forward drive, having an axially movable clutch-operating member with actuating-means for Vsaid operating member and for said brake-mechanism, the actuating-means being movable in one direction from neutral to actuate the clutch-operating member, and thereby the clutch for forward drive, and in the opposite direction from neutral to set the brake and cause .reverse drive. i

In the aforesaid structures, the actuatingmeans for the clutch-operating member, which comprises a thrust sleeve and link and lever mechanism intermediate the sleeve and clutch-operating member, is connected with the case, and by reason of such connection will remain at rest when the actuatingmeans is in position to set the brake and secure reverse drive; while in neutral position, such parts will rotate. As the sleeve of the actuating-means is mounted on `the propeller shaft, and is free; the relative rotation of these parts, with the actuating-means in neutral position and reverse drive, produces friction between the sleeve and propeller-shaft, as well as between the sleeve and the means connected therewith for shiftino' the same.

lIt is an object of the present invention to avoid this friction and such object may be attained by providing a structure in which the clutch-operating member is carried by or connected with the same element to which the actuating-means is connected, and by mounting the sleeve of the actuatingmeans on the propeller shaft for longitudinal or axial movement, but fixed against independent rotary movement with respect thereto. As vfor instance, both the clutchoperating member and the actuating-mechamsm may be connected with the annular or internal gear-member. In this arrangement the clutch-operating member, as well as the actuatingmechanism, will remain at rest when the gearing is in neutral position, and will rotate with the propeller shaft, when the gearing is in reverse position, hence independent movement of these parts, existing in the prior types referred to, and resulting in the friction also referred to, is avoided.

The present invention has for another object the provision of improved means for limiting the movement of the actuating means in that direction necessary to set the clutch-mechanism beyond a point necessary for a proper engaging relation of the clutchmembers, whereby the possibility of moving the actuating-means in a forward drive position to a point beyond such proper engagement of the clutch-plates is prevented. The limiting-means of the present invention will, therefore, insure against possibility of an excessive movement of the actuating-means, and will avoid other than a proper contacting pressure between the clutch-plates, the limiting means being, however, preferably made adjustable, in order that the desired maximum pressure between the clutch-members, due to the operation of the actuatingmeans, may be predetermined.

In the drawings,

Figure 1 is a view in elevation, partly in section, of one form of reversing-gear, and illustrating the application thereto of the improvements forming this invention.

Fig. 2 is a rear end elevation of the same.

Fig. 3 is an enlarged broken sectional view illustrating the connections and support for the clutch-operating member.

Fig. 4 is a broken sectional view illustrating particularly the limiting-means for the movement of the sleeve element of the actuating-means in one direction.

Fig. 5 is a section on line 5--5 of Fig. 4.

The reversing-gear shown is of a type with which the present improvements are particularly cooperative, and 'for the purposes ot the present invention, may be generally described as 'tolloivs:-

The driving-shaft Z has secured thereto, by a lrey Z),a spur-gearc.l A case Z is arranged, to inclose the parts, the yannular Wall e ot which is provided with a removable end-Wall-f, havingan annular open-- ing to rotatably receive the hub of the spurgear. The Wall f ot the case supports a series of pinions y, havingengagements With the spur-gear. The pinions f/ are also engagedby the teeth ZL of an-internal gear i, which is extended as at 7;', beyond said pinions and hasan annular disk-like Wall j, the outer cylindrical'suriiace ot said internal gearbearing against the inner surface ot the annular Wall of the case..A The inner peripheral edge ci the Wall j is integrally and axially projected in the forni of a hub Z.

`The case (Z is interiorly provided with an annular Wall m, which is rotatably engaged by. and bears against the annular i'vall ot the internal gear, YWhile the outerv surtace of the case, in line iviththe p inlons. is cut out at n, for thereception ofthe brakemechanism 0V otnhich no particular description is necessary. rllhe hub 'Z .oit the annular gear is secured upon the-propeller-shaft y?, by a `'key y, and-this hub, vfor the purpose ot the ymiesent invention. is

made comparatively long. The 'chamber for the clutch-members vis arranged. at one side of the annularA Wall m in the case, such Wall m constituting one end ot the clutchplate chamber. The clutch platesare arranged in this chamber v and adapted in clutching; operation` to bebroug'ht into su h pressure contact as to secure their trictional enagement,l the alternate plates having' inner peripheral teeth to engage the teeth as formed on the hub Z, the'rremaining vplates having teeth orprojections t, on their `(mier peripheral edge to engage pins u, mounted 4in `the annular VWall mo'tthe case, andn a removable 'Wall to be lat'erzdescribed` 1n providing; for a structure, whereby the clutch-operating i member and actuatingmeans therefor will reniern yat rest when the parts are in neutral position, it is apparent that such parts may be supported t hub of the annular gear, end in .cai-' A out this feature, that portion ot the h nb which extends 'beyond the teeth, is exteriorly threaded to receive fan Yadjustable collar 2, that edge of the collar next'the clutch-plate chamber being annularly-reduced 5l to rotatably receive` a ning e.. The ring 1., Which-is of great-er diameter than the collar 2, V4is formed at ,determinate pointsavi'tli bosses 5,y havinoholcs througghfthem which extend axiallyto the inner face of the ring ,ag-id securedV in molesuremovablyg: if desired, are sleeves 6, ijn which. are flidably mounted pins 7. rllhe relative inner ends of the .pinsare "threaded at 8, see Figa 3, andnengage with threaded openings in the clutch-operating member or plate 9, which latter is-o a size to eiiectively coperatc withV and bear upon the outermost clutch- Iplate.l VThe outer ends ot ythe pins are threaded `orthe reception of nuts 10, and between the nuts and proximate/ends ot the sleeve 6 arrangedcoiled springs 11, which serveV to normally 'move said .pins Vmitivardly with respectV to the clinch-plates. thereby to hold the clutch-operating;- member in retracted or unclutching position. To prevent axial movement ot the rino,` et, nnder an excessive movement of the actuatingl means, in reverse-drive movement Twlnch might operate the plate 9 to set the clutch p'latesthe'sleeves 6 are torined'yvith lateral projections 1 2,'desig'ned to engage recesses 13, formed in the outer edge of the collarv 2, so that the ring l thusheldy against independent movement axially ot the collar.

The clutch-operatingmember 9 isthus carried yby the hub ot the internal dean-and by reason. of the threaded connection ot the collar with said-hub, saidiclutch-operating memberfrnay be adjusted for varying'k the clutching pressure. This adjustment is secured by rotationof zthe collar 2.v on the hub, the threads permitting. relatively in- Ward or outward movement ot said collar `in such turning position. To secure the collar in lined.relationtothehub, following desired V'positioning of ringe, therejis provided a housinglotlset from said ring. in -which .is arranged a; springpressed pin 15, operable trom beyond Vthe housing and having its inner end adapted -to engage any one ot a series. ot recesses 1 6 formed in the rllheactuating-means for the clutch operating-member .9 will ncrv lbe described thrust. sleeve VV17 secured upon the propeller-shaft `against other than longitudinal or axial rnovenient,y preferably by `the aforesaid key Q., See Fig. 1. Operating levers 18 are terminally connected by links 19 ivith n the sleeve, andattheir V oppositev ends arc pnf'otally supported, at` 20, between ears 2l. projecting, from the ring; il; IThe levers 1S.

adjacent the pivotal .connectitms V20, are

formed Vwith radial lugs or ytoes22., which are positioned to bear upon .the headset Vpins 23,V removablyl secured in and. project-ingr beyond theproximate surface of the'clutch operating-member .or plate 9. The springs 11 also serve Vto hold theclutch operating-member 9 in vengagement yvith the lugs or toes 22 of the levers 18. Thesleeve 17 is adapted for operation, tol secure 4the desired actionof ythe reversing-gear, .by shifting mechanisrnr including a yoke lever l24. engaging f diametrical-ly opposite pins 2 5 ot a collar 26,

.freely rotatable in annular recess 27,

formed in or on said sleeve, the lever being keyed upon a bearing 28, mounted in fixed bearings 29, and operated through the handle 3U keyed upon the shaft. The lever 24C is connected at its upper end through a bar 3l. to a link 32, for the brake-mechanism o, it being understood that in the operation of the lever to set the parts for reverse drive, link 32 Will be operated to set the brake; while in otherI positions of the actuatinglever the brake will be free.

he end of the case immediately beyond the clutch-operating member or plate 9 is partly closed by a wall 34, in the form of an annular member removably secured to the-end. of the Wall of the case by bolts The inner peripheral edge of the removable Wall 34 is just beyond the operating plane of the lugs or toes 22, of the clutching levers i8, and in this wall and opening through the inner surface, or that surface next the clutch plate chamber, there is formed an annular undercut channel 36, to receive oil for lubricating the clutch-plates. The formation of this oil pocket is such that rotative action of the parts will not cause the oil to be forced therefrom, but will permit a gradual escape of oil for lubrication until the supply is exhausted. The Wall 34 is formed with opening-s 8?, at appropriate intervals to receive the outer ends of pins/u, which form the engaging member of the case for cert-ain of the clutch-plates.

rlhe thrust 17 is formed with a series of circumferentially alined recesses 38, see Figs. 4 and 5, and through the walls 39, formed thereby and next the clutch-mechanism proper are extended limiting bolts 4-0. The ends of the bolts remote from the sleeve are threaded at ail to engage suitably threaded openings in the end of the hub of the internal-gear, while the ends of the bolts Within the recesses 38 are threaded for the reception of nuts 4t2, which nuts serve to limit movement of the sleeve in one direction relative to the hub, the use of the nuts permitting an obvious adjustment of such limitation. rFhe sleeve in .its operation to set the clutch for forward drive is moved from neutral away from the clutching-mechanism, and oppositely or toward the clutchingmechanism from neutral for reverse drive. The recefscs 3S will, therefore, be ot a length to permit the full necessary movement of the sleeve.

I claim l. ln a reverse gearing, a driving-shaft, a driven-shaft, gearing connecting said shafts including yan internal gear and a brake-mechanism to secure reverse drive, clutch-mechanism to secure forward drive including clutch-plates and. a clutch operating-member, said plates and operating-member arranged for axial movement on the hub of the internal gear, actuating means for said operating-member, link and lever mechanism connecting said clutch-operating member and actuating-means, means con straining said clutch operating-member and actuating-means for simultaneous rotation upon a reverse drive.

2. In a reverse gearing, a driving-shaft, a driven-shaft, gearing connecting said shafts including an internal gear and a brake-mechanism to secure reverse drive, and clutch-mechanisin to secure forward drive including clutch-plates and a clutch operating-member, said plates and operating member arranged for axial movement on the hub of the interial gear, actuatingmeans for said operating-member, link and lever mechanism connecting said clutch-operating member and actuating-means, said clutch operating-member and actuating means being adapted to remain at rest when the reverse gearing is in neutral, inoperative position.

3. In a reversing gearing, a driving shaft, a driven shaft, gearing connecting said shafts including an internal gear and a brake-mechanism to secure reverse drive, clutch-mechanism including clutch plates and a clutch-operating member to secure forward drive, some of said clutch plates and said clutch-operating member arranged for axial movement on the hub of said internal gear, actuating-means for said4 operating-member slidably arranged on said driven shaft including link and lever mechanism connecting it with said operatingmember, and means positively to constrain said clutch-operating member and actuatingmeans for simultaneous rotation for reverse drive,

4a In a reversing gearing, a driving shaft,

a driven shaft, gearing connecting said' .forward drive, some of said clutch plates and said operating-member arranged for sliding movement on the hub of'said internal gear. actuating-means, link and lever mechanism connecting said actuating-means with said clutch-operating member, and means connecting said actuating-means with the hub of said internal gear admitting of axial movement of said actuating-means on said driven shaft.

5. In a reverse gearing, a driving shaft, a driven shaft, gearing connecting said shafts including an internal gear and brakemechanism to secure reverse drive, and clutch-mechanism including clutch-plates and an operating' member to secure forward drive, some of said plates and said operat-` ing-member slidably mounted on the hub of said internal gear, actuating-means for said operating-member slidably arranged on said driven shaft, linlr and lever mechanism connecting said actuating-means with said operating member, and means positively constraining said operating-member and actuating-means against rotation independent of the driven shaft, and against rotation independently of each other. Y

6. in ka reverse gearing, a driving shaft, a driven shaft, gearing connecting said shafts including brake-mechanism to secure reverse drive and clutch-mechanism to secure forward drive, an internal gear, a clutch operating memberl slidably arrangedon the hub of said gear, a ring adjustably mounted on the hub of said gear, andv resilient means connecting said ring and operatingmember admitting of an axial movement of said operating member relative to said ring.

"Z. In a reverse' gearing` a driving` shaft, arrdriven shaft, gearing connecting said shafts including brake-mechanism to secure reverse drive and clutch-mechanism to secure forward drive, an internal gear, a clutch-operating member slidably arranged on ,the hub of id gear, a ring Vadjusta-bly mounted on the hub of said gear, rods connected with said. operating-member slidably arranged insaid ring, and springs engaging said rods and ring to move said operatingmemher axially. Y Y

-8. lny a reverse gearing, a driving-shaft, a driven-shaft, gearing connecting vsaid shaftsincluding an' internal gear connected with the driven shaft, and brake mechanism cooperating therewith to secure reverse drive, and clutch-mechanism to secure for ward drive, including clutch plates, and an operating-member, some ofy said clutchplates and'said operating-member slidably mounted on the hub of said internal gear, actuating-means for said operating-member, link and lever mechanism connecting them, and means fixing them against rotative action independently of each other, orinde- Vpendently of lthe driven shaft, which admits of limited axial movement of the operatingmember independently of the internal gear with which it is associated.

9. Areverse gearing, including a drivingshaft, .a driven-shaft, a spur gear connected to the driving-shaft, aninternal gear connected to the driven-shaft, a case having gearing intermediate the spur gearand internal gear, brake-mechanism coperating Vwith the case to secure reverse drive, clutchmechanism arranged.intermediate and wholly within the case and between the case and inn ternal gear to secure forward drive, the case having a removable wall beyondthe clutchmechanism and formed on its surface next the Aclutch-mechanism with an annular ,undercut channel. l

l0. 'ln a reverse gearing, a driving-shaft, a driven-shaft, gearing connecting said shafts drive, a clutch-mechanism to secure forward drive, actuating-means movable in opposite directions from neutral, to operate said mechanisms, respectively, and means rigidly connected to a component part of said coniiectii'iggcaring and slidably connected with one member of the actuating-means to limit movement of said actuating-means in that direction to operate the clutch-mechanism. Y l1.. n a reverse gearing, a driving-shaft, a driven-shaft, gearing connecting said shaftsinclnding brake-mechanism to secure reverse drive, arclutch-mechanism to secure forward drive, actuating-means movable in opposite directions from neutral, to operatc said mechanisms, respectively, and rods 'fidly connectedrto a component part of said connecting gearing and slidably conn ectedv with one member of the actuatingmeans, to limit movement of saidactuatingmeans in that direction to operate the clutch- Y Vmeans in that direction to operate the clutchmechanism.

In a reverse gearing, a driving-shaft,

a driven shaft, gearing connecting said shafts including brake-mechanism to secure reverse drive, a clutch-mechanism to secure forward drive, actuating-means movable in opposite directions from neutral, to operate said mechanisms, respectively, including a sleeve, and rods connected at one end with a component part of the connecting vgearing and at their other ends with theY sleeve, to limit movement of said actuating-means in that direction to operate the clutch-mechanism, said sleeve having longitudinal recesses for the rods admitting of relative sliding movements yof the sleeve withV respect to the rods, i A Y le. ln a reverse gearing, a driving-shaft, a drivenshaft, gearing connecting said shafts including brake-mechanism to secure reverse drive, la clutch-mechanism to secure forward drive, actuating-means movable in opposite directions from neutral, to operate said mechanisms, respectively, and means to limit the movement of said actuating-means in .that direction-to operate the clutch-mechanism having adjustable means associated with it to vary such movement and determine the contact pressure ofthe clutchelements.

including brake-mechanism to secure reverse l5, ,In a reverse gearing, a driving-shaft,

a driven-shaft,v gearing connecting said shafts including brake-mechanism to secure reverse drive, a clutch-mechanism to secure forward driven, actuating-means movable in opposite directions from neutral, to operate said mechanisms, respectively, including a sleeve and rods connected at one end with a component part of the connecting gearing and at their other ends with the sleeve to limit movement of said actuating-means in that direction to operate the clutch-mechanism, said sleeve having longitudinal recesses for the rods admitting of relative sliding movements of the sleeve with respect to the rods, said rods having adjustable heads thereon by which to vary such movement and determine the contact pressure of the clutch-elements.

16. In a. reversin gearing, a drivingshaft, a driven-sha t, gearing connecting said shafts including an internal gear, and brake-mechanism to secure reverse drive, a clutch-mechanism to secure forward drive, actuating-means movable in opposite directions from neutral, to operate said mechanisins, respectively, and means connecting said internal gear with said actuating-means, to limit movement of said actuating means in a direction to operate the clutch mechanism.

17. In a reversing gearing, a drivingshaft, a driven-shaft, gearing connecting said shafts including an internal gear and brake-mechanism to secure reverse drive, a clutch-mechanism to secure forward drive. actuating-means movable in opposite directions from neutral, to operate said mechanisms, respectively, means connecting said internal gear with said actuating-means, to limit movement of said actuating-means in a direction to operate the clutch-mechanism, said connecting-means admitting of movement of the actuating-means in the other direction to operate the brake-mechanism.

ilpln a reversing gearing, a drivingshaft, a driven-shaft, gearing connecting said shafts including a non-axially movable internal gear, anc. brake-mechanism to secure reverse drive, a clutch-mechanism to secure forward drive, actuating-means Inovable in opposite directions from neutral to operate said mechanisms. re pectively, and means connecting said internal gear with sa'd actuating-means to limit movement of il actuating-means in a direction to operare the clutch-machnanism.

1.9. ln a reversing gearing, a drivingshaft, a driven-shaft, gearing connecting said shafts including an internal gear and brake-mechanism to secure reverse drive, a cl'titoli-mechanism to secure forw rd drive, actuating-means movable in opposite directions from neutral to operate said mechanisms, respectively, and rods connected at one end to said internal gear, and slidably connected at'their other ends to one i Lember of the actuating-means, to limit movement of said actuating-means in that direction to operate the clutch-mechanism and admit of movement of the actuating-means in the opposite direction to operate the brake-mechanism.

ln testimony whereof l have signed my name to this specification in the presence of two subscribing witnesses.

HENRY A. TUTTLE.

lWitnesses T. T. GREENWOOD, H. B. Davis. 

